blob: a1a1eca6be45b0e3ebe72d9d236071719ba979d9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASM_SMP_H
2#define __ASM_SMP_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#include <linux/threads.h>
5#include <linux/cpumask.h>
6#include <linux/bitops.h>
7#include <asm/pal.h>
8
9/* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
10
11static __inline__ unsigned char
12__hard_smp_processor_id(void)
13{
14 register unsigned char __r0 __asm__("$0");
15 __asm__ __volatile__(
16 "call_pal %1 #whami"
17 : "=r"(__r0)
18 :"i" (PAL_whami)
19 : "$1", "$22", "$23", "$24", "$25");
20 return __r0;
21}
22
23#ifdef CONFIG_SMP
24
25#include <asm/irq.h>
26
27struct cpuinfo_alpha {
28 unsigned long loops_per_jiffy;
29 unsigned long last_asn;
30 int need_new_asn;
31 int asn_lock;
32 unsigned long ipi_count;
33 unsigned long prof_multiplier;
34 unsigned long prof_counter;
35 unsigned char mcheck_expected;
36 unsigned char mcheck_taken;
37 unsigned char mcheck_extra;
38} __attribute__((aligned(64)));
39
40extern struct cpuinfo_alpha cpu_data[NR_CPUS];
41
42#define PROC_CHANGE_PENALTY 20
43
44#define hard_smp_processor_id() __hard_smp_processor_id()
Ingo Molnar39c715b2005-06-21 17:14:34 -070045#define raw_smp_processor_id() (current_thread_info()->cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
Linus Torvalds1da177e2005-04-16 15:20:36 -070047extern int smp_num_cpus;
Ivan Kokshayskyc7d2d282006-06-04 02:51:34 -070048#define cpu_possible_map cpu_present_map
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Linus Torvalds2ac66082005-07-28 10:34:47 -070050int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, cpumask_t cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52#else /* CONFIG_SMP */
53
Linus Torvalds2ac66082005-07-28 10:34:47 -070054#define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; })
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56#endif /* CONFIG_SMP */
57
58#define NO_PROC_ID (-1)
59
60#endif